American Heritage Dictionary
(2)
Century Dictionary
(3)
GNU Webster's 1913
(1)
WordNet
(2)
Elsewhere on the web
It didn't take long for the process to become a tedious one and upon cogitation, the HG came up with a bold but brilliant plan.— chron.com Chronicle
It e m p l o y s the style of left-hemisphere processing: analysis, sequential logical cogitation, and mental calculations within a pre-prescribed system.— Recently Uploaded Slideshows
This structure had cost Captain Blyth a vast amount of almost painful cogitation, and was the result of a little fit of excusable, and perhaps natural pique, which had come over him on finding how exceedingly well the two landsmen had managed without him.— The Missing Merchantman
"He doesn't observe me_," he said to himself; "if he did he would see, he wouldn't think The end of this private cogitation was a vague impatience of all the things his venerable host took for granted.— The Tragic Muse

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